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Binary Terms

The Computer Science & IT Guide

Instruction Format and Sequencing

Instructions in a program have proper instruction format and sequencing which decides the flow of the program execution. There are several types of instructions in a computer program like: instruction performing arithmetic or the logic operation on the numbers instruction that branches to other instruction in the program the instruction that checks the particular … [Read more...] about Instruction Format and Sequencing

Vector Processing

Vector processing performs the arithmetic operation on the large array of integers or floating-point number. Vector processing operates on all the elements of the array in parallel providing each pass is independent of the other. Vector processing avoids the overhead of the loop control mechanism that occurs in general-purpose computers. In this section, we will have a … [Read more...] about Vector Processing

Pipelining in Computer Architecture

Pipelining organizes the execution of the multiple instructions simultaneously. Pipelining improves the throughput of the system. In pipelining the instruction is divided into the subtasks. Each subtask performs the dedicated task. The instruction is divided into 5 subtasks: instruction fetch, instruction decode, operand fetch, instruction execution and operand store. The … [Read more...] about Pipelining in Computer Architecture

Critical Section Problem

The part of the process, where the code for accessing the shared resources is written, that part or section is the critical section (CS) of that process. Now the critical section problem is to implement such a solution, which can be used by the processes to cooperate when they share common resources. To execute its critical section, a process must take care of the three … [Read more...] about Critical Section Problem

Parallel Processing

Parallel processing requires multiple processors and all the processor works simultaneously in the system. Here, the task is divided into subparts and these subparts are then distributed among the available processors in the system. Parallel processing completes the job on the shortest possible time. Let us understand the scenario with the help of a real-life … [Read more...] about Parallel Processing

Contiguous Memory Allocation

Contiguous memory allocation is a memory allocation method that allocates a single contiguous section of memory to a process or a file. This method takes into account the size of the file or a process and also estimates the maximum size, up to what the file or process can grow? Taking into account the future growth of the file and its request for memory, the operating system … [Read more...] about Contiguous Memory Allocation

Swapping in Operating System

Swapping is one of the several methods of memory management. In swapping an idle or a blocked process in the main memory is swapped out to the backing store (disk) and the process that is ready for execution in the disk, is swapped in main memory for execution. We will be discussing swapping in more detail. As we all know, a process must be placed in main memory for its … [Read more...] about Swapping in Operating System

Memory Allocation

Memory allocation is an action of assigning the physical or the virtual memory address space to a process (its instructions and data). The two fundamental methods of memory allocation are static and dynamic memory allocation. The static memory allocation method assigns the memory to a process, before its execution. On the other hand, the dynamic memory allocation method … [Read more...] about Memory Allocation

Directory Structure

Several users create thousands and millions of files in a file system. To organize these files properly file system uses directory structure. The directory structure has the entries of the all the files related to that directory. We can consider that a directory is a file, that contains information about the other files. Here, we will discuss some common schemes defining the … [Read more...] about Directory Structure

Process Control Block (PCB)

For each process, the operating system maintains the data structure, which keeps the complete information about that process. This record or data structure is called Process Control Block (PCB). Whenever a user creates a process, the operating system creates the corresponding PCB for that process. These PCBs of the processes are stored in the memory that is reserved for the … [Read more...] about Process Control Block (PCB)

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